1.1 Various options are provided as possible answers to the following questions - NSC Agricultural Technology - Question 1 - 2022 - Paper 1
Question 1
1.1 Various options are provided as possible answers to the following questions. Choose the answer and write only the letter (A–D) next to the question numbers (1.1.... show full transcript
Worked Solution & Example Answer:1.1 Various options are provided as possible answers to the following questions - NSC Agricultural Technology - Question 1 - 2022 - Paper 1
Step 1
1.1.1 The types of gases used in MIG welding:
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Answer
The types of gases commonly used in Metal Inert Gas (MIG) welding include Argon, helium, and CO₂. These gases provide the necessary shielding to protect the weld area from atmospheric contamination.
Step 2
1.1.2 Typical voltage range of the plasma-cutting machine:
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The typical voltage range for plasma cutting machines is between 220 to 230 volts, which is crucial for ensuring effective cutting performance.
Step 3
1.1.3 A pneumatic tool that can be used to loosen wheel nuts on a tractor:
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A torque wrench is a pneumatic tool that can be effectively used to loosen wheel nuts on tractors, allowing for precise tightening.
Step 4
1.1.4 Which ONE of the following is regarded as a secondary cultivation tool?
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The rotavator is considered a secondary cultivation tool as it is specifically designed to prepare soil for planting after primary tillage.
Step 5
1.1.5 A lawnmower cutting blade is manufactured from …:
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Lawnmower cutting blades are typically made from carbon steel due to its strength and ability to maintain a sharp edge.
Step 6
1.1.6 Which ONE of the following can NOT be used to provide drive from the tractor to the water pump on a crop sprayer?
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The V-belt cannot be used to provide drive from the tractor to the water pump, as it is not designed for such applications.
Step 7
1.1.7 The ram-type baler is fitted with a … attached to the side of the ram to separate the hay in the baling chamber from the rest.
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This device is known as a packing arm, which helps to compact the hay into bales.
Step 8
1.1.8 This action causes a wind turbine to work less efficiently:
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Lack of maintenance is the primary action that causes a wind turbine to work less efficiently, as it can lead to mechanical failures.
Step 9
1.1.9 The energy contained in sunrays:
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The energy contained in sunrays is classified as solar energy, which is harnessed in various technologies.
Step 10
1.1.10 … changes the band structure of stainless steel and causes a reduction in striking strength.
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Answer
Manganese is known to change the band structure of stainless steel, which leads to a reduction in its striking strength.
Step 11
1.2.1 Change the UNDERLINED word(s) in the following to make the statements TRUE.
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The black gas hose of the cutting torch is connected to the acetylene gas cylinder, which supplies fuel for the flame.
Step 12
1.2.2 Change the UNDERLINED word(s) in the following to make the statements TRUE.
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Brazing is a welding process during which worn parts can be built up by padding with a hard-facing material, ensuring durability.
Step 13
1.2.3 Change the UNDERLINED word(s) in the following to make the statements TRUE.
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Noise pollution is a serious health risk that can cause stress, fatigue, and damage to the ears, highlighting the need for protective measures.
Step 14
1.2.4 Change the UNDERLINED word(s) in the following to make the statements TRUE.
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VRT systems can be used to pinpoint the exact position up to one metre, enhancing precision in agricultural practices.
Step 15
1.2.5 Change the UNDERLINED word(s) in the following to make the statements TRUE.
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Rectangular bales are easily handled, and storage space is optimally utilised, making them efficient for agricultural operations.
Step 16
1.3.1 Choose a word or term in COLUMN B that matches the description in COLUMN A.
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E – A method of harvesting maize in wet conditions refers to hand-picking.
Step 17
1.3.2 Choose a word or term in COLUMN B that matches the description in COLUMN A.
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G – A major cause of metal fatigue on a hammer mill is vibration.
Step 18
1.3.3 Choose a word or term in COLUMN B that matches the description in COLUMN A.
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C – A welding rod used to weld steel to iron parts is a flint lighter.
Step 19
1.3.4 Choose a word or term in COLUMN B that matches the description in COLUMN A.
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F – A material that can be welded with a MIG welder is aluminum.
Step 20
1.3.5 Choose a word or term in COLUMN B that matches the description in COLUMN A.
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D – The tool used to light the oxyacetylene welding flame is a flint lighter.
